Flood in Union County, Pennsylvania

Flood August 7, 2023 · Union County, Pennsylvania

Where the report was made, with tornadoes recorded within 15 miles over the years.

What the National Weather Service wrote

Water flowing across the roadway led to the closure of Route 45 west of Mifflinburg.

The wider storm

High CAPE (>2500 J/kg) and strong speed and directional shear contributed to a significant severe weather episode across south-central Pennsylvania during the afternoon and evening of August 7, 2023. Of note, a significant bow echo produced widespread wind damage and a trio of weak (EF0-EF1) tornadoes across southern York and Lancaster Counties.

Began near Swengel (40.9060, -77.1145).

Source: NOAA Storm Events Database, event 1119669. Narratives are written by the National Weather Service forecast office that issued the report.

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